This analogue gas sensor has a small heating element with an electronic-chemical sensor. It is suitable for indoor use and can only output accurate readings after the warm-up phase is complete. Features - compatible with Arduino - compatible with Raspberry Pi only in combination with part no. RPI ADC (see accessories) - 100 - 1000 ppm measuring range - high sensitivity (adjustable via potentiometer) - fast response time - evaluation of measured values from microcontroller (analog) - threshold setting possible (digital) - 24 V loop voltage - 5 V heating voltage - 29 Ohm heating resistor at room temperature - <900 mW Heizleistung - -10 - +50 °C Betriebstemperatur measurable substances - hydrogen (H2) - various gases containing hydrogen Connections - VCC: power supply 5V - GND: Ground connection - AOUT: Analog Output - DOUT: Digital Output Dimensions - L x W x H: 52 x 20 x 18 mm Note Attention: The sensor gets warm during operation! https://elecena.pl/product/18528937/sen-mq8-developer-boards-gas-sensor-hydrogen-mq-8 2021-05-21 https://elecena.pl/product/18528937/sen-mq8-developer-boards-gas-sensor-hydrogen-mq-8 2024-06-23